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Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.
ASTM A536 Grade 100-70-03 is a premium high-strength, wear-resistant ductile cast iron. Produced with a fully pearlitic matrix structure (>85% fine pearlite) typically obtained through normalizing heat treatment or controlled cooling with pearlite-stabilizing additions (copper, tin, manganese). It guarantees a minimum tensile strength of 100 ksi (689 MPa), minimum yield strength of 70 ksi (483 MPa), and 3% minimum elongation, making it suited for high-stress gears, track rollers, and camshafts.
Source-backed commercial trade name and short designations cataloged in canonical data.
Standard Designations & Applicable Specifications — Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| ASTMPRIMARY | A536 Grade 100-70-03 | ASTM International | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| UNS | F34800 | Unified Numbering System | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| SAE | J434 D7003 | SAE International | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| Ductile Iron 100-70-03 | Commercial Alias | Colloquial or commercial industry synonym |
| Pearlitic Ductile Iron | Colloquial Alias | Colloquial or commercial industry synonym |
| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| ASTM | ASTM A536 | Standard Specification for Ductile Iron Castings | Specification Reference |
| SAE | SAE J434 | Automotive Ductile (Nodular) Iron Castings (Grade D7003) | Specification Reference |
Chemical Composition (Weight %) — Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).
| Element | Symbol | Atomic No. | Semantic Basis | Specified Value | Unit | Metallurgical Notes & Qualification | Data Status |
|---|---|---|---|---|---|---|---|
| Carbon | C | 0 | RANGE | 3.40 – 3.75 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Silicon | Si | 0 | RANGE | 2.00 – 2.60 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Manganese | Mn | 0 | RANGE | 0.50 – 0.90 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Phosphorus | P | 0 | MAXIMUM | ≤ 0.05 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Sulfur | S | 0 | MAXIMUM | ≤ 0.02 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Magnesium | Mg | 0 | RANGE | 0.04 – 0.06 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Copper | Cu | 0 | RANGE | 0.40 – 0.80 | wt% | Pearlite stabilizer.Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Iron | Fe | 0 | REMAINDER | Remainder | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
Source-specific physical properties. Test temperatures are shown only where reported.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Density | 7.15 g/cm³ | TYPICAL | 7.15 g/cm³ | ASTM International, CEN & ISO Technical Committees | VERIFIED |
Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Thermal Conductivity | 30 W/(m·K) | TYPICAL | 30 W/(m·K) | ASTM International, CEN & ISO Technical Committees | VERIFIED | |
| Specific Heat Capacity | 490 J/(kg·K) | TYPICAL | 490 J/(kg·K) | ASTM International, CEN & ISO Technical Committees | VERIFIED | |
| Coefficient of Thermal Expansion | 11.2 µm/(m·K) | TYPICAL | 11.2 µm/(m·K) | ASTM International, CEN & ISO Technical Committees | VERIFIED |
Electrical conductivity and resistivity in their reported units and conditions.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Electrical Resistivity | 600 nΩ·m | TYPICAL | 600 nΩ·m | ASTM International, CEN & ISO Technical Committees | VERIFIED |
Contextual Mechanical Properties & Tempers: Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Separately cast test coupon | Normalized or Q&TSource values and qualifiersUltimate Tensile Strength: ≥ 689 MPa (MINIMUM)Governing minimum tensile strength per ASTM A536 Grade 100-70-03 (100 ksi = 689 MPa).ASTM International, CEN, ISO & ASM International Standards Technical Committees — ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1 | — | ≥ 689 MPa | — | — | — | — | — | VERIFIED |
| Standard Product Form | Normalized or Q&TSource values and qualifiers0.2% Offset Yield Strength: ≥ 483 MPa (MINIMUM)Governing minimum 0.2% offset yield strength per ASTM A536 (70 ksi = 483 MPa).ASTM International, CEN, ISO & ASM International Standards Technical Committees — ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1 Elongation at Break (50 mm): ≥ 3 % (MINIMUM)Governing minimum tensile elongation in 2 inches (50 mm) is 3.0%.ASTM International, CEN, ISO & ASM International Standards Technical Committees — ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1 | — | — | ≥ 483 MPa | ≥ 3 % | — | — | — | VERIFIED |
| Standard Product Form | Normalized or Q&TSource values and qualifiers | — | — | — | — | — | — | 240–300 HBW | VERIFIED |
Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.
Moderate machinability (~60% relative to C36000 baseline). Pearlitic matrix and high hardness (240–300 HBW) demand rigid machine tools, coated carbide inserts, and reduced cutting speeds.
Extremely difficult to weld. High hardenability promotes brittle martensitic HAZ; welding should be avoided on critical loaded sections.
Normalized: heat to 870°C–900°C (1600°F–1650°F), hold 1 hour per 25 mm of thickness, air cool with fan assist. Can be oil quenched and tempered.
Non-deformable. Limited to casting net shape.
Comparable Grades & Cross-References: Carefully classified cross-reference relationships for ASTM A536 Grade 100-70-03 Ductile Cast Iron. Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| ASTM A536 Grade 120-90-02 Ductile Cast Iron | Cast Iron | Commonly Compared | 100-70-03 achieves high strength through air normalizing, while 120-90-02 requires oil quenching and tempering to achieve tempered martensite/bainite with 827 MPa tensile strength.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
| EN-GJS-700-2 Ductile Cast Iron | Cast Iron | Approximate Equivalent | EN-GJS-700-2 (min 700 MPa UTS, 420 MPa YS, 2% elongation) and ASTM A536 100-70-03 (min 689 MPa UTS, 483 MPa YS, 3% elongation) represent directly equivalent pearlitic heavy-duty wear grades.Engineering substitution review required. Design calculations must verify temper, formability, and corrosion limits before specifying as a direct replacement. | VERIFIED | Side-by-Side Compare → |
Contextual technical guides explaining degradation mechanisms, testing methodologies, and selection criteria relevant to ASTM A536 Grade 100-70-03 Ductile Cast Iron.
Cast iron is an indispensable alloy family renowned for superior vibration damping and castability, but its iron matrix and carbon microstructure make it susceptible to atmospheric rust. Restoring rusted cast iron requires understanding how mechanical and chemical methods interact with the underlying metal.
Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.
Authoritative foundry data harmonized across ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, and ASM International Handbook Volume 1 (Properties and Selection: Irons, Steels, and High-Performance Alloys).